Python程序在信号处理程序运行完成之前退出

Question

我已经注册了一个SIGINT处理程序，以便在python程序退出之前保存一些数据。处理程序似乎在完成之前就被终止了。为什么会这样？我能做些什么？你知道吗

import sys
import signal
import pickle

debug_data = {
    # some hash
}
debug_known_values = {
    # some other hash
}

def exit_run(signal, frame):
    print("Saving debug data...")
    with open("debug_data.pickle", 'wb') as debug_data_file:
       pickle.dump(debug_data, debug_data_file)
       print("done dumping debug data")
    print("Saving debug known values...")
    with open("debug_known_values.pickle", 'wb') as debug_known_values_file:
        pickle.dump(debug_known_values, debug_known_values_file)
        print("done dumping known values")
    print("exiting")
    sys.exit(0)
signal.signal(signal.SIGINT, exit_run)


if __name__ == "__main__":
    input()
    exit_run(None, None)

如果我按输入以正常退出程序，我得到

Saving debug data...           
done dumping debug data        
Saving debug known values...   
done dumping known values      
exiting   

如果我按Ctrl+C键，我会得到

Saving debug data...            
done dumping debug data         
Saving debug known values...    

我正在Windowsx64上使用Python3.3.2。你知道吗

Answer 1

这个问题是由使用ComEmu引起的。它在结束退出前终止了进程。代码在普通cmd窗口中运行良好。你知道吗